Painting apparatus.



G. H. FISCHER.

PAINTING APPARATUS.

APPLIOATION FILED AUG.18, 1909.

991,709. A Patented May 9, 1911.

f/Z'i'vss er.- Jf I GEORG- HEINRICH FISCHER, 0F NEUsTADT oN-THE-HAR DT, GERMANY.

PAINTING APPARATUS.

Application filed August 18, 1909. 'Serial Ito/513,397.

Specification of Letters Patent.

Patented May 9,1911.

To all whom it may concern:

Be it known that I, Gnonc HEINRICH Fiscnnn, a subject of the King of Bavaria, residing at Neust-adt-on-the-Hardt, Rheinpfalz, Germany, have invented new and useful Improvements in Painting Apparatus, of which the following is a specification.

My invent-ion relates to an improved a paratus for applying paint and the like, 1n which provision is made for mixing the material, and for conducting it automatically to the brush or brushes.

The'new apparatus is'differentiated from prior contrivances of this class by the current of air employed for exerting pressure on the paint, being forced through the latter into the receptacle, whereby the paint is simultaneously agitated and its ingredients intimately mingled. Such mixing is of particular advantage in the case of metallic paints, whose pigments owing to their weight rapidly settle; for by means of the present invention the paint while being fed to the brush, and while being spread by the latter, can be kept in such a state that an extremely durable coat is insured.

A practical-embodiment of the invention is represented in the accompanying drawing, in which Figure 1 is a vertical section and part elevation, while Fig.2 is a sectional view of a substitute paint brush for the apparatus.

The vessel a for holding-the supply of paint is furnished with an opening for the introduction of an air-pump 6, whose air exit 0 is located at the bottom of the re: ceptacle a and is controlled by a valve e, contained in a nozzle-shaped ca f. 'On

actuation of the pump I) the'air is orced out through the pipe 0 and cap f and will pass upward through the paint into the vessel a, thus agitating and mixing the contents, and by accumulatlng at the top it will place the paint under pressure. The extent of pressure at which the paint is to be maintained may be controlled with the aid of the gage p mounted on the top ofthe vessel a. The,

tter, is hermetically closed by a cover h,

, which is preferably screwed down upon a gasket '5 to make the air-tight joint.

For the purpose of further promoting agitation and mixing of the paint, vanes Z are provided. These are loosely mounted on a shaft n, which rotates in a long bearingtube a and for preventing spurti,

prevent loss of pressure through leakage. I

The vanes lie immediatelyabove the nozzle of the cap f, and sincethey are loose on the shaft, the air issuing from the nozzle, on

operation of the pump 6, will rotate thenn,

thus causing them thoroughly to stir up the paint. Should the pressure inthe vessel 0:, however, be so high that further increase is undesirable, though continued mixing of the paint is requisite, the shaft a must be drawn toward the outside, whereby pins 0 projecting from its end will be brought into engagement with correspondingslots furnished in the hub Z of the vanes, so that t-helatter are coupled with the shaft and can be rotated by turning the crank p. In this manner the paint can be mixed quite inde: pendently of working of the air pump. To

prevent unintentional engagement of the" pins 0 in the slottedhub Z, a guide-arm 0 is secured on one vane Z. This arm engages the flange of the inside extension of the bearing m and rides on said flange, as the vanes re- I At the bottom of the vessel a is a well a, closed below by a screw plug. 3 which admits of the contents of the vessel being drained ofl'. From the well a there conducts a passage or pipe '1', controlled by a cock 9, for discharging the paint. The pipe pipe .t through 1' is connected to the flexible which the paint is fed to the brush 8. stead of only-one passage 1' there may be a number of such, each conducting through a separate pipe t to a brush of its own. The

brush 8 is provided with'a central passage u,

formed in the present instance by a metal tuheu, to which there is screwed a flanged connecting-piecejo, which admits of brush handles of different sizes or different descriptions (see 'Fig. 2) bein used. Means are provided for regulating t e flow of paint to the brush, consisting-in the present caseof a cock to, whose cas'mg'w" accommodates a thin tube w for admissionof the paint tp the o t same during painting. "When n t uarters filled at the most. The pump is 1: en 'replaeed' an dthe cover tightly secured down. Hereupon air is pumped in, until the gageg indicates the desired pressure. The requisite ressure can be readily produced and will e retained until the paint in the vessel is exhausted; repeated pumping,-

therefore, is* not necessary.

Owing to the peculiar construction of the air valve and its location at the bottom of the vessel, the air will pass up through the paint. Thus during pumping the paint Will be in a state of constant agitation, whereby thorough mixing will be effected. During this active mingling of the paint. the loosely mounted mixing-vanes Z, as already explained, will beset in operation automatically by the air escaping from the nozzle below them. Should the vanes fail to start operatin automatically on actuation of the pump or instance in the ease of a specially tou varnish-paint resisting their motion), or s ould repeated stirring be necessary during painting (such as may happen when heavy, and thus quickly settling, metallic pigments are employed) the vanes must 'be coupled with the shaft 12 in the manner above described and the crank p then rotated.

The construction of the vanes is such as to admit of their being readily removed for cleaning purposes. Their presence is naturally not imperative for operation of the.

a paratus, and if the latter has to be emp oyed during their absence, a screw-plug may be inserted in the hole which ordinarily receives the shaft bearing.

Having thus described my invention, I

eemoe declare that what I claim as new and desire to secure by Letters Patent is:-

1. A painting apparatus, comprising a closed Vessel, an air pump mounted centrally therein and havin an upwardly directed outlet nozzle near t e bottom of said vessel, and rotatable means for a itating the paint mounted above said-nozz e, whereby said means can be rotated by the airissuing from said nozzle.

2. A painting apparatus comprising a closed vessel, an air pump mounted centrally therein and having an upwardly directed outlet nozzle near the bottom of said vessel, rotatable means for agitating the paint mounted above said nozzle, whereby said means can be rotatedby the air issuing from said nozzle, and means located without said vessel for rotating said agitating means manually.

3. A painting apparatus, comprising a hermetically closable vesselhaving a paintoutlet at the bottom, means for introducing an air-current into the said vessel, its airoutlet being located at the bottom of the latter, and vanes loosely mounted within the vessel, above said air-outlet, and adapted to be driven by the escaping air, substantially as describe 4. A painting apparatus, comprising a hermetically closable vessel having a paintoutlet at the bottom, means for introducing an air-current int-o thesaid vessel, its airoutlet being located at the bottom of the latter, an axially sliding shaft extending through the wall of the vessel, vanes loosely mounted on said shaft, above said air-outlet, means for coupling the vanes to the shaft on the latter being axially slid, and means for rotating the shaft from without the vessel, substantially as described. a

In testimony whereof -I have signed my name to this specification in the presence of two subscribin witnesses.

GEOR HEINRICH FISCHER.

Witnesses:

Hammer: Srnm aa, ADAM Emma. 

